Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Sun Valley experiences an average high-temperature of a still subzero cold 26.8°F (-2.9°C) in January, marking an insignificant shift from 25°F (-3.9°C) in December. Throughout the month of January, the average temperature dips to an extreme cold 8.4°F (-13.1°C) at night.Humidity
The average relative humidity in January in Sun Valley is 85%.Rainfall
In Sun Valley, in January, it is raining for 6.2 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, in Sun Valley, there are 107.7 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Sun Valley. In Sun Valley, in January, during 14.1 snowfall days, 12.72" (323mm) of snow is typically accumulated. Throughout the year, there are 88.2 snowfall days, and 69.45" (1764mm) of snow is accumulated.Daylight
The average length of the day in January in Sun Valley is 9h and 23min.On the first day of the month, sunrise is at 8:10 am and sunset at 5:10 pm. On the last day of January, sunrise is at 7:55 am and sunset at 5:46 pm MST.
Sunshine
With an average of 5.7h of sunshine, January has the least sunshine of the year in Sun Valley.UV index
In Sun Valley, Idaho, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sun Valley in January?
What is the average humidity in January in Sun Valley?
How many days does it rain in January in Sun Valley?
How much does it snow in Sun Valley in January?
What is the average length of the day in January in Sun Valley?
When are sunrise and sunset in January in Sun Valley?
What is the month with the least sunshine in Sun Valley?
How many hours of sunshine does Sun Valley have in January?
What is the UV index intensity in January in Sun Valley?
Average temperature in January
Sun Valley, ID
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in January: 8.4°F
The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in January
Sun Valley, ID
- Average pressure in January: 30.27"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Sun Valley, ID
- Average wind speed in January: 4.5mph
The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in January
Sun Valley, ID
- Average humidity in January: 85%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).
Average rainfall in January
Sun Valley, ID
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in January
Sun Valley, ID
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in January
Sun Valley, ID
- Average snowfall in January: 12.72"
The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Sun Valley, ID
- Average snowfall days in January: 14.1 days
The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Sun Valley, ID
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in January
Sun Valley, ID
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in January
Sun Valley, ID
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Sun Valley, ID
- Average cloud cover in January: 40
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in January
Sun Valley, ID
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Sun Valley, Idaho, USA
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